If you feel your house is sinking, you may have serious foundation problems. A sinking foundation is in need of immediate attention. You may notice cracks in various places. Look for cracks in the corners of windows, fireplace bricks, ceiling cracks, wall cracks, floor cracks, or even cracks in the foundation itself. Cracks in just 1 or 2 of these mentioned areas don’t necessarily mean your foundation is sinking, but cracks that appear in all or most of these areas likely point to a sinking foundation problem.